In the second inning, Cingrani was checked out by trainers and then pulled from the game after just 37 total pitches. He was replaced by Greg Reynolds.
This season, the 24-year-old has been quite effective: 2.80 ERA (140 ERA+), 1.08 WHIP and a 2.83 K/BB ratio in 22 games, 17 of which have been starts.
Earlier this season, Cingrani dealt with minor shoulder soreness and then spent time on the DL with tightness in his lower back. It's of course possible that Tuesday night's injury is related to that DL stint, which just ended on Sept. 5.